<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<link rel="stylesheet" type="text/css" href="css/bootstrap.min.css"/>
		<meta name="viewport" content="width=device-width,initial-scale=1,minimum-scale=1,maximum-scale=1,user-scalable=no" />
		<script src="js/jQuery3.4.1.js"></script>
		<script src="js/bootstrap.bundle.js"></script>
		<title></title>
	</head>
	<body>
		<div class="cantainer">
			<div >
				<!-- 触发器 -->
				<button type="button" class="btn btn-success dropdown-toggle" data-toggle="dropdown">Web前端开发技术</button>
				<div class="dropdown-menu">
					<a href="#" class="dropdown-item">HTML5</a>
					<a href="#" class="dropdown-item">CSS3</a>
					<a href="#" class="dropdown-item">JS</a>
				</div>
			</div>
			<div class="my-2">
				<!-- 触发器 -->
				<button type="button" class="btn btn-success dropdown-toggle" data-toggle="dropdown">Web前端开发技术</button>
				<div class="dropdown-menu">
					<a href="https://www.baidu.com/" class="dropdown-item active">HTML5</a>
					<a href="#" class="dropdown-item">CSS3</a>
					<a href="#" class="dropdown-item disabled">JS</a>
				</div>
			</div>
		</div>
		<div class="continer  mt-3">
			<div class="dropdown">
				<!-- 触发器 -->
				<button type="button" class="btn btn-danger dropdown-toggle my-3" data-toggle='dropdown'>下拉菜单</button>
				<!-- 下拉菜单的菜单 -->
				<div class="dropdown-menu">
					<!-- <h6 class="dropdown-header">菜单标题1</h6> -->
					<button type="button" class="btn btn-danger dropdown-toggle dropdown-item my-2" data-toggle='dropdown'>菜单标题1</button>
					
					<div class="dropdown-menu">
						<button type="button" class="dropdown-item">酸菜鱼</button>
						<button type="button" class="dropdown-item">番茄鱼</button>
					</div>
					<button type="button" class="btn btn-danger dropdown-toggle dropdown-item my-2" data-toggle='dropdown'>菜单标题1</button>
					<div class="dropdown-menu">
						<button type="button" class="dropdown-item">锡纸烤鱼</button>
						<button type="button" class="dropdown-item">冰粉</button>
					</div>
				</div>
			</div>
			<div class="dropdown mt-3">
				<!-- 触发器 -->
				<button type="button" class="btn btn-warning dropdown-toggle" data-toggle='dropdown'>下拉菜单</button>
				<div class="dropdown-menu">
					<p>下面显示一个表单</p>
					<form action="zhuce.php" method="post">
						<div>
							<label for="mail">E-mail:</label>
							<input type="email" name="mail" id="mail" placeholder="请输入邮箱地址" class="form-control"/>
						</div>
						<div class="form-group">
							<label for="Password">Password:</label>
							<input type="password" name="Password" id="Password" placeholder="请输入密码" class="form-control"/>
						</div>
						<div class="text-right">
							<button type="submit" name='login' class="btn btn-success">登录</button>
						</div>
					</form>
				</div>
			</div>
		</div>
	</body>
</html>
